Finding the Fourth Proportional to 209.62, 314.18 and 122.99
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Solution
The fourth proportional to 209.62, 314.18 and 122.99 is: 184.34
Step by Step Solution
- Step 1: Write the proportion equation
209.62 : 314.18 = 122.99 : x - Step 2: Convert to fraction form
209.62/314.18 = 122.99/x - Step 3: Cross multiply
209.62x = 314.18 × 122.99 - Step 4: Simplify right side
209.62x = 38,640.38 - Step 5: Solve for x
x = 38,640.38/209.62 - Step 6: Final answer
x = 184.34
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.